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116
1045
Alfred Graham & Co. switchboard
telephone with Siemens handset, circa
late 19th / early 20th century, four
switches to front for 'A.C.M.E., Chief
Clerk, General Office & Drawing Office',
plaque to front with usage instructions
and other interesting information
including 'This telephone combines
complete secrecy with conference
facilities' and the word 'Mermaid'
(possibly a call sign), height 24cm approx.
(An unusual but very interesting item)
£70 - £100
1046
Monocular microscope, by Browning,
London, height 28.5cm
£40 - £60
1047
Dollond brass and leather 'Signalling'
three drawer telescope, no. 14312, circa
early 20th century, total length 79cm
approx.
£40 - £60
1048
A travelling pocket aneroid barometer by
Lawrence and Mayo, London. in its
original case but case broken
£50 - £70
1049
Victorian Submarine telegraph cables,
the display housed within a glazed box
frame, with a note to the rear stating
'Submarine telegraph cables, Aden to
Bombay triplicate, laid 1891, Strand
Shore end showing various stages of
manufacture, Deep sea section, total
length 2000 nautical miles, weight of
shore end is 26 1/2 tons per nautical
mile, size of core 400/300, copper
conductor 400 Lbs per nautical mile,
Gutta Percha insulation 300 Lbs per
nautical mile', box frame size 38cm high
x 32.5 wide
£150 - £200
1050
"The Rapid" opera and field glass with
compass, complete with box instructions
£15 - £20